package com.heng.futureDemo;

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

public class ACompletableFutureAPIDemo11 {
    public static void main(String[] args) {

        ExecutorService threadPool = Executors.newFixedThreadPool(3);
        CompletableFuture.supplyAsync(() -> {
            try {TimeUnit.SECONDS.sleep(1);} catch (InterruptedException e) {e.printStackTrace();}
            System.out.println("111");
            return 1;
        },threadPool).handle((f,e) -> {
            System.out.println("222");
            return f + 2;
        }).handle((f,e) -> {
            System.out.println("333");
            return f + 3;
        }).whenComplete((v,e) -> {
            if(e == null) {
                System.out.println("---计算结果： " + v);
            }
        }).exceptionally(e ->{
            e.printStackTrace();
            System.out.println(e.getMessage());
            return null;
        });

//        try {TimeUnit.SECONDS.sleep(11);} catch (InterruptedException e) {e.printStackTrace();}

        System.out.println(Thread.currentThread().getName()+"---主线程忙其他任务");
        threadPool.shutdown();
    }
}
